Homework from last class:• Complete the Check Your Understanding questions

on p. 223: 10, 12, 17, 18, 19, 20

Chapter 6 pp. 224-230

Ch. 6.3 Assisted Reproductive Technologies

Assisted Reproductive TechnologiesMany people seek Assisted Reproductive Technologies (ART) if they are infertile.

Infertility: the inability of a couple to have a baby

Most assisted reproductive technologies involve:

1) Removing eggs from the woman2) Fertilizing the eggs3) Returning the fertilized eggs to the uterus.

Types of Assisted Reproductive TechnologiesArtificial Insemination (AI): a reproductive technology

that includes collecting sperm from a male and injecting into a female

• AI is widely used to breed farm animals, especially dairy cattle

Types of Assisted Reproductive TechnologiesIn Vitro Fertilization (IVF): technology used to treat

specific fertility problems by fertilizing an egg cell in a petri dish

• “in vitro” means in glass

• In IVF, egg and sperm are collected and fertilization takes place in a dish. Embryo(s) are then placed in the female’s uterus.

Video – “In Vitro Fertilization”

Types of Assisted Reproductive TechnologiesGamete Intrafallopian Transfer (GIFT): an assisted

reproductive technology in which eggs and sperm are collected, mixed, then injected into the woman’s fallopian tubes.

• Fertilization takes place inside the woman’s body

Intracytoplasmic Sperm Injection (ICSI): a specialized procedure in which a single sperm cell is injected into an egg cell.

• The zygote is then inserted into the woman’s uterus.• ICSI has a 25% success rate.

The Impact of Assisted Reproductive Technologies on Society

Reproductive technologies can help childless couples, but may carry a higher risk of birth defects.

Q: Should we continue to use a technology that carries an extra risk?

Often ARTs result in “leftover” embryos.Q: What should be done with them?

Most children conceived by AI will never know the identity of their fathers.Q: Is it fair to a child to keep this information secret?

Homework for next class:• Complete the “Types of assisted reproductive

technologies” worksheet (p. 94 in BC Science 9 workbook) if not already completed in class

• Complete Unit 2 Reproduction: Biology Review (Ch. 4-6) to prepare for the Ch. 4-6 Reproduction review next class

• Begin working on 30 Ch. 6 cue cards due on the day of the Reproduction unit test (Ch. 4-6)▫ Tuesday, April 26 for Block 2-4▫ Wednesday, April 27 for Block 1-1

• Read over class notes and check class bloghttp://www.msoonscience.blogspot.com

Works CitedImages taken from the following sources:http://www.ladyspeak.com/pregnancy/assisted-reproduction-technology-

using-donor-eggs-and-sperm.phphttp://www.science-pooja.co.cc/http://www.californiaivf.com/http://knol.google.com/k/egg-donation#http://www.alaska-in-pictures.com/dairy-cows-3414-pictures.htmhttp://www.ivfpregnancycenter.com/?p=10http://www.fearandparenting.com/tag/got-milk/